CN1739331A

CN1739331A - Re-greening technology of high gradient slope in stone pit

Info

Publication number: CN1739331A
Application number: CN 200410075307
Authority: CN
Inventors: 刘照朗
Original assignee: Individual
Current assignee: Individual
Priority date: 2004-08-27
Filing date: 2004-08-27
Publication date: 2006-03-01
Anticipated expiration: 2024-08-27
Also published as: CN100435616C

Abstract

The re-greening technology includes constructing reinforced concrete pond with common anchor bolts in rocky wall for soil-fixing culture; drop irrigation for fore stage plant cultivation; and drilling hole and capillary water sucking board to establish greening engineering and self-balancing water and soil system to form long term stable plant growth condition.

Description

Re-greening technology of high gradient slope in stone pit

The invention belongs to mine ecological management technical field.No similar techniques is reported and practical precedent both at home and abroad at present.The purpose of invention is that the exposed high slope of developed area abandoned quarry, stope is carried out vegetation is multiple green, recovers natural landscape, administers the environment and the visual field and pollutes.

Subject content is: utilize common bolt to construct half of pond of armored concrete (being called for short the greening pond) and backfill composite plant soil on precipitous crag, cause the native liquid manure conservation condition of plant growing; Adaptable tendril class ground cover plant of plantation or trees in the greening pond; Carry out plant growing maintenance in early stage with easy drip irrigation, micro irrigation technology; Utilize boring and the capillary plate technique that draws water to set up water and soil self equilibrium systems between afforestation project and massif, the growth steady in a long-term of supply plant progressively forms domatic permanent vegetation cover.Construction process is as follows:

1, construct the greening pond:

Design level boring, slip casting symmetrically up and down, install two row common bolts.Anchor pole is arranged 0.8～1.0 meter of spacing up and down, about 1.5 meters of level interval.Following anchor pole φ 16～18, exposed parts (about 1.0 meters of length) are bent upwards into about 60 degree, are the support anchor pole; Last anchor pole bends to bifilar with φ 10～12 round steel or screw-thread steel, expose curved ring end hook and tangle bottom support anchor pole, is called the suspention anchor pole.One deck expanded metal lath or bamboo chip net are laid in colligation φ 6～8 cross reinforcements 3～4 roads on the perpendicular muscle of exposing of support anchor pole in the cross reinforcement.Framework of steel reinforcement with formation is a support, makes template with scrap iron skin or plank, constructs the half of concrete sump of triangle.The hole of not boxing out at the bottom of the pond and between crag, all reinforcing bars will coat with concrete or cement mortar, do not expose.

After solidify in the greening pond, backfill composite plant soil, the prescription of composite plant soil is: the field soil that water content is moderate adds an amount of fertilizer, chemical fertilizer, raising agent (saw foam), water-loss reducer and persistent pesticide.

Greening pond height is not less than 1.0 meters (pool wall can be increased with the part of laying bricks), and width suitable for reading is not less than 0.8 meter, and the linear meter(lin.m.) amount of banketing is not less than 400 kilograms.Along crag about 10.0 meters of the vertical intervals in two-layer greening pond up and down.

2, plantation:

On the backfill composite earth, cover layer of plastic film, the film perforate.Dense planting vines plants in the pond, as Chinese humid euphorbia (Boston ivy), the adaptability trees can be planted by place, the many cracks of spacious place or crag.After plantation is finished, cover thick 2～3 centimeters of sand bed on the film.

3, lay droping irrigating pipe:

Laying droping irrigating pipe carries out before covered with plastic film.

Get the flexible plastic tube of about 15 centimeters of internal diameters, on tube wall every 30～50 centimeters with iron bore spine one hole, insert a 1～1.5mm in the hole immediately ²The plastic cement electric wire.Interior 1～2 centimeter of electric wire insertion tube will tilt towards water (flow) direction; Electric wire exposes 5～20 centimeters not to be waited, and distance supplies water to hold and should grow more nearby, should lack at a distance, is intended to regulate the amount of dripping by different resistances.After electric wire inserts, pulling out copper core in the line immediately, stay permeable hole, is to be the drip irrigation microtubule.

Irrigation conduit should be imbedded under the plantation soil layer 5～10 centimeters, end sealing, and other end erection joint is connected with feed pipe.If when a feed pipe connects many irrigation conduits of differing heights, should pressure-reducing valve be installed at the low level pipeline.Can incorporate auxiliary materials such as an amount of chemical fertilizer, agricultural chemicals in the water supply, whenever, supply water and must filter with the above screen pack of 150 orders.

4, afforestation project and massif water and soil self equilibrium systems:

The water and soil self equilibrium systems is built preceding construction in the greening pond.

Position between the two rows anchor pole of greening pond every about 1.5 meters, is bored one and is not less than φ 45 borings, 2.5～3.0 meters of hole depths, angle of declination 20～30 degree.Carry out chambering blasting with 100～150 gram explosives at the bottom of the hole, be intended to enlarge boring retaining volume and increase the crack that connects with massif water.Insert a branch of capillary plate (plastic optical fibre used of conventional soft foundation ballast stabilization by drainage technology draw water sheet) that draws water in the hole.Then, fine sand is filled out in marginal not high pressure waterside in the hole, and is full until sand.The plate that draws water exposes 20～30 centimeters, and the greening pond is embedded in the soil when banketing.

5, maintenance and management:

Greening is administered outside the domatic bench crest, should build intercepting drain, prevent rainy season mountain torrents and Rolling Stone damage the greening pond.

After the completion, the drip irrigation system that utilize to be provided with, the maintenance plant 6～8 months of pouring water, apply fertilizer, treat stable surviving after, stop man-made irrigation.Keep plant growth steady in a long-term by the water and soil self equilibrium systems, until forming permanent vegetation cover.

Figure of description explanation: among Fig. 1: 1.---support anchor pole, 2.---the suspention anchor pole, 3.---the boring of water and soil self equilibrium systems, 4.---the plate that draws water of water and soil self equilibrium systems, 5.---irrigate plastic flexible pipe, 6.---expanded metal lath or bamboo chip net, 7.---lay bricks and increase in the pool wall part, 8.---cross reinforcement; Among Fig. 2: 5.---irrigate plastic flexible pipe and amplify, 9.---the drip irrigation microtubule.

Claims

Major technique feature of the present invention is: utilize common bolt to construct the half of pond (greening pond) of reinforced concrete on crag, realize soil retaining cultivation; Utilize drip irrigation technique to carry out plant maintenance in early stage; Utilization is holed and capillary draws water, and the plate method is set up afforestation project and massif water and soil self equilibrium systems, forms plant growth conditions steady in a long-term.